Which can never be an acid? 1) Hs- 2) NH3 3)HOOCCOO- 4)H20 5)NO2-

Question

Question

Which can never be an acid?

1) Hs-

2) NH3

3)HOOCCOO-

4)H20

5)NO2-

science chemistry

Answer 1

Answer #1

A substance that can donate a proton or accept an electron, can be termed as an acid.

1) HS-: HS- can donate a proton to form S^2-. Thus, it can act as an acid.

2) NH₃: NH₃ can be considered as an acid. It can act as an acid by donating a proton and thus forming NH₂-.

3) HOOCCOO-: HOOCCOO- can donate a proton to form C₂O₄^2- anion. Thus, it acts as an acid.

4) H₂O: H₂O can act as an acid by the donation of a proton.

5) NO₂-: NO₂- can either accept a proton or donate an electron. Thus it can act as a base and not an acid.

Thus, NO₂- can never be an acid.

Answer 2

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